高压直流控制保护系统的设计与实现

Design and realization of HVDC control and protection system

在介绍MACH2直流控制保护系统的总体结构的基础上,给出了SCADA系统、交流站控系统、直流极控系统、直流保护系统的设计和实现方案。详细介绍了直流极控系统,包括其基本控制策略、基于电流过零信号的阀触发的监视和控制功能、无功功率控制、系统监视和切换功能。该方案已在我国葛洲坝—上海直流输电控制保护系统改造中应用,并取得了很好的效果。

The overall structure of MACH2 DC control and protection system is introduced,based on which,the design and realization of SCADA,AC station control system,DC pole control system and DC protection system are described. The DC pole control system is emphasized,including basic control strategy,converter firing control and monitoring using EOC（Extinction Of Current）,reactive power control, system supervision and switching. The practice in reconstruction of Gezhouba-Shanghai HVDC control and protection system shows its effectiveness.